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Sprout/sprout/cwchar/wmemcmp.hpp
2012-10-06 00:58:56 +09:00

26 lines
673 B
C++

#ifndef SPROUT_CWCHAR_WMEMCMP_HPP
#define SPROUT_CWCHAR_WMEMCMP_HPP
#include <cstddef>
#include <sprout/config.hpp>
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
namespace detail {
inline SPROUT_CONSTEXPR int
wmemcmp_impl(wchar_t const* s1, wchar_t const* s2, std::size_t n) {
return !n ? 0
: *s1 == *s2 ? sprout::detail::wmemcmp_impl(s1 + 1, s2 + 1, n - 1)
: *s1 - *s2
;
}
} // namespace detail
inline SPROUT_CONSTEXPR int
wmemcmp(wchar_t const* s1, wchar_t const* s2, std::size_t n) {
return sprout::detail::wmemcmp_impl(s1, s2, n);
}
} // namespace sprout
#endif // #ifndef SPROUT_CWCHAR_WMEMCMP_HPP